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Forum: 4speed RWD/FWD Transmission Tuning (incl T42)

4L60E, 4L80E, 4T60E etc transmission tuning, incl T42 TCM.

  1. manual gear selection overide 4l80e

    Started by 2500ak, January 5th, 2010
    • Replies: 4
    • Views: 6,659
    2500ak
    January 6th, 2010 Go to last post

  2. TCC Apply Rate

    Started by 2500ak, January 26th, 2010
    • Replies: 5
    • Views: 5,168
    schwoch1
    February 13th, 2010 Go to last post

  3. M6 to 60e swap with COS3 & SD

    Started by 2ktransam, June 22nd, 2009
    • Replies: 0
    • Views: 2,223
    2ktransam
    June 22nd, 2009 Go to last post

  4. Making both trans modes the same

    Started by 34Koop, July 22nd, 2005
    • Replies: 0
    • Views: 3,292
    34Koop
    July 22nd, 2005 Go to last post

  5. Question Non TCC PWM transmission/converter in vehicle originally wth TCC PWM?

    Started by 350SS, December 14th, 2006
    • Replies: 2
    • Views: 4,984
    350SS
    March 17th, 2007 Go to last post

  6. why do shifts and shift times feel different when in SD?

    Started by 350SS, March 19th, 2007
    • Replies: 7
    • Views: 5,208
    4.8t
    May 5th, 2008 Go to last post

  7. why 1>2 shift happens at higher rpm than 2>3 shift?

    Started by 350SS, March 13th, 2008
    2 Attachment(s)
    • Replies: 1
    • Views: 3,598
    1SlowHoe
    March 13th, 2008 Go to last post

  8. Trans swap - GenIV pcm T42 question

    Started by 350SS, October 24th, 2008
    • Replies: 0
    • Views: 2,788
    350SS
    October 24th, 2008 Go to last post

  9. Wont shift at wot

    Started by 400ss, June 22nd, 2012
    2 Attachment(s)
    • Replies: 8
    • Views: 6,090
    joecar
    June 28th, 2012 Go to last post

  10. E38 4l60e non iss possible?

    Started by 400ss, September 6th, 2012
    • Replies: 6
    • Views: 3,648
    400ss
    September 6th, 2012 Go to last post

  11. can you run a 04 4L60 with a 08 T42?

    Started by 400ss, April 12th, 2014
    • Replies: 0
    • Views: 1,366
    400ss
    April 12th, 2014 Go to last post

  12. Going from 4L60E to 4L80E and keep 4L60E segment, relays mod, any help?

    Started by 400ss, July 5th, 2015
    1 Attachment(s)
    • Replies: 7
    • Views: 12,181
    joecar
    May 1st, 2017 Go to last post

  13. 4l80e swap stuck in 2nd

    Started by 4wheelin, December 1st, 2007
    2 Pages •
    1 2
    • Replies: 14
    • Views: 19,088
    hquick
    January 22nd, 2008 Go to last post

  14. TCC unlocks slips

    Started by 4wheelin, December 5th, 2007
    • Replies: 4
    • Views: 4,004
    4wheelin
    December 7th, 2007 Go to last post

  15. Trans goes into Normal hot 2 mode

    Started by 4wheelin, February 15th, 2008
    2 Pages •
    1 2
    • Replies: 18
    • Views: 8,153
    zackde
    April 8th, 2010 Go to last post

  16. Light for power shift on/off

    Started by 4wheelin, March 7th, 2011
    • Replies: 3
    • Views: 3,551
    whackem04
    March 23rd, 2011 Go to last post

  17. Want to lockup 4L60E in third gear at WOT

    Started by 67SS509, September 26th, 2017
    2 Pages •
    1 2
    1 Attachment(s)
    • Replies: 17
    • Views: 8,821
    joecar
    September 27th, 2017 Go to last post

  18. Old T42 tune to new T42 requires updated operating system, segment swap?

    Started by 68problemchild, March 28th, 2019
    2 Attachment(s)
    • Replies: 3
    • Views: 3,255
    joecar
    April 28th, 2019 Go to last post

  19. torque`signal

    Started by 69camaro5speed, December 6th, 2006
    • Replies: 2
    • Views: 4,353
    69camaro5speed
    December 6th, 2006 Go to last post

  20. trans pressure &TFMDC

    Started by 69camaro5speed, December 9th, 2006
    2 Pages •
    1 2
    • Replies: 13
    • Views: 9,810
    ScarabEpic22
    December 13th, 2006 Go to last post
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